Lake County, IN ZIP Codes

Indiana (IN)  ·  32 ZIP codes  ·  19 cities
32
ZIP codes
498,558
population (2021)
+0.5%
pop change since 2010
18089
FIPS code
Lake County ZIP code map
About Lake County
Lake County is located in Indiana and contains 32 ZIP codes across 19 cities and communities. The county's population was 498,558 as of 2021, an increase of 0.5% from 496,005 in 2010. The timezone is Mountain Time (observes DST). The Federal Information Processing System (FIPS) code for Lake County is 18089.
Population
2021 population498,558
2010 population496,005
Change+0.5%
County details
StateIndiana
FIPS code18089
TimezoneMountain
Daylight savingYes
Cities in Lake County
Cedar Lake Crown Point Dyer East Chicago Gary Griffith Hammond Highland Hobart Lake Station Leroy Lowell Merrillville Munster Saint John Schererville Schneider Shelby Whiting
ZIP codes for Lake County, IN (32)
ZIP code City County Map
46303 Cedar Lake Lake View map
46307 Crown Point Lake View map
46308 Crown Point Lake View map
46311 Dyer Lake View map
46312 East Chicago Lake View map
46319 Griffith Lake View map
46320 Hammond Lake View map
46321 Munster Lake View map
46322 Highland Lake View map
46323 Hammond Lake View map
46324 Hammond Lake View map
46325 Hammond Lake View map
46327 Hammond Lake View map
46342 Hobart Lake View map
46355 Leroy Lake View map
46356 Lowell Lake View map
46373 Saint John Lake View map
46375 Schererville Lake View map
46376 Schneider Lake View map
46377 Shelby Lake View map
46394 Whiting Lake View map
46401 Gary Lake View map
46402 Gary Lake View map
46403 Gary Lake View map
46404 Gary Lake View map
46405 Lake Station Lake View map
46406 Gary Lake View map
46407 Gary Lake View map
46408 Gary Lake View map
46409 Gary Lake View map
46410 Merrillville Lake View map
46411 Merrillville Lake View map

Demographics & statistics

501,650
Population
39.5
Median age
$71,170
Median household income
$34,508
Per capita income
$163,940
Median home value
$1,048
Median monthly rent
66.5%
Home ownership
18.5%
Poverty rate
8.5%
Unemployment
160,922
Housing units
21.0%
Bachelor's or higher

Age distribution

Male Female
14,108
Under 5
14,938
15,349
5–9
16,252
16,761
10–14
17,748
16,558
15–19
17,532
15,094
20–24
15,983
29,472
25–34
31,207
31,582
35–44
33,442
30,300
45–54
32,084
16,670
55–59
17,652
16,081
60–64
17,028
24,825
65–74
26,286
11,818
75–84
12,514
5,035
85+
5,331
← Male
Female →

Age summary

GroupCount%
Under 18116,76224.1%
18 and over384,88875.9%
65 and over85,80916.8%
Median age39.5 years

Race & ethnicity

White 51.6%
Black or African American 20.4%
Hispanic or Latino 12.2%
Other race 7.4%
Two or more races 6.8%
Asian 1.3%
American Indian / Alaska Native 0.3%
GroupCount%
White294,61351.6%
Black or African American116,71220.4%
Hispanic or Latino69,70812.2%
Other race42,1497.4%
Two or more races38,8826.8%
Asian7,5471.3%
American Indian / Alaska Native1,6270.3%

Household income

Under $10k 7.5%
$10k–$15k 4.9%
$15k–$25k 8.9%
$25k–$35k 9.5%
$35k–$50k 13.0%
$50k–$75k 16.8%
$75k–$100k 12.8%
$100k–$150k 14.7%
$150k–$200k 6.4%
$200k+ 5.6%
Range% of households
Under $10k7.5%
$10k–$15k4.9%
$15k–$25k8.9%
$25k–$35k9.5%
$35k–$50k13.0%
$50k–$75k16.8%
$75k–$100k12.8%
$100k–$150k14.7%
$150k–$200k6.4%
$200k+5.6%
Median income$71,170

Housing

Home values

Under $50k 11.5%
$50k–$100k 20.1%
$100k–$150k 17.3%
$150k–$200k 16.7%
$200k–$300k 18.5%
$300k–$500k 12.2%
$500k–$1M 3.1%
$1M+ 0.5%

Housing overview

MetricValue
Median home value$163,940
Median rent / month$1,048
Owner occupied66.5%
Renter occupied33.5%
Vacant13.3%
Single-family detached72.9%
Large apartment buildings4.5%
Mobile homes1.3%
Median rooms5.6
Avg household size (owned)2.56

Year built

Era%
2020 or later0.4%
2010–20194.3%
2000–20099.2%
1990–19998.2%
1980–19895.9%
1970–197912.7%
1960–196912.6%
1950–195917.0%
1940–194911.0%
1939 or earlier18.8%

Bedrooms

Size% of units
No bedroom (studio)1.0%
1 bedroom7.6%
2 bedrooms29.2%
3 bedrooms43.0%
4 bedrooms15.5%
5+ bedrooms3.8%

Vehicles per household

Vehicles% of households
No vehicle8.9%
1 vehicle37.5%
2 vehicles34.7%
3 or more18.9%

Heating fuel

Fuel type%
Utility gas86.3%
Electricity10.4%
Propane / LP gas1.8%
Fuel oil0.4%
Wood0.3%
No fuel used0.5%

Households & families

Household typeCount%
Married-couple family84,09639.0%
Cohabiting couple13,3027.0%
Male householder, no spouse36,48020.2%
Female householder, no spouse59,35633.8%
Households with children under 1860,57431.4%
Households with seniors (65+)62,10631.8%
Average household size2.57

Marital status

StatusMaleFemale
Never married41.5%37.1%
Married41.1%37.7%
Separated2.2%2.1%
Widowed4.1%10.3%
Divorced11.1%12.8%

Education

Less than 9th grade 4.4%
Some HS, no diploma 7.2%
HS graduate 37.3%
Some college, no degree 21.7%
Associate's degree 8.4%
Bachelor's degree 14.0%
Graduate / professional 7.0%
Metric%
HS diploma or higher88.4%
Bachelor's or higher21.0%

School enrollment (ages 3–17)

TypeCount%
Nursery / preschool7,3356.2%
Kindergarten6,6166.1%
Elementary school52,07844.6%
High school28,15524.2%
College / grad school23,99818.9%

Employment

Industry of employment

Education & healthcare 23.1%
Manufacturing 15.2%
Retail trade 11.8%
Arts, food & hospitality 10.4%
Professional & management 9.2%
Transportation & utilities 7.8%
Construction 6.9%
Other services 4.8%
Finance & real estate 4.3%
Public administration 3.1%
Wholesale trade 1.9%
Information 1.3%
Agriculture & mining 0.4%

Occupation

Category%
Management, business & arts29.4%
Service19.8%
Sales & office21.6%
Natural resources & construction9.4%
Production & transportation19.7%

Employment type

Type%
Private sector86.3%
Government10.0%
Self-employed3.4%
Unpaid family workers0.2%

Commute

Method%
Drive alone80.4%
Carpool8.7%
Public transit2.2%
Walk1.3%
Other means1.9%
Avg commute (minutes)28.2

Poverty

All people 18.5%
Under 18 years 27.6%
18 and over 15.2%
Married-couple families 6.2%
Female-led households 28.0%

Income support

Source% of households
Social Security35.0%
Retirement income25.5%
Supplemental Security6.7%
Cash public assistance2.1%
Food stamps / SNAP16.4%

Health indicators

Condition%
High blood pressure37.0%
High cholesterol30.6%
Heart disease7.1%
Stroke4.0%
Asthma10.9%
Arthritis28.4%
Kidney disease3.5%
Pulmonary disease8.4%
Cancer6.1%
Behavior / access%
Binge drinking15.3%
No physical activity32.3%
Less than 7 hrs sleep37.6%
Fair or poor health21.4%
Poor mental health15.9%
Poor physical health13.0%
No health insurance18.4%
Visited doctor (checkup)77.0%
Visited dentist55.2%
Cholesterol screening89.1%
Teeth loss19.8%

Veterans & disability

VeteransCount%
Civilian veterans24,1196.3%
Disability%
Any disability14.4%
Under 184.0%
18–64 years13.1%
65 and over35.0%

Health insurance coverage

Type%
Private insurance61.0%
Public insurance43.2%
Uninsured under 194.5%

Language & origin

Language spoken at home (age 5+)

LanguageCount%
English only472,60494.1%
Spanish20,6484.4%
Other Indo-European15,4653.5%
Asian & Pacific Islander2,9500.5%
Other languages1,7440.3%

Place of birth & citizenship

OriginCount%
Native born (US)466,33693.4%
Born in same state460,35192.2%
Born in different state274,64854.7%
Foreign born5,9851.2%
Naturalized citizen35,3146.6%
Not a US citizen20,23255.2%

Ancestry

AncestryCount%
Italian50,89010.1%
French27,9235.6%
English14,5092.9%
Arab10,6962.1%
Irish5,4171.1%
AncestryCount%
Polish2,2040.4%
Norwegian1,8880.4%
German9600.2%
Dutch6520.1%

Technology access

Metric% of households
Computer access38.8%
Internet access91.0%

Source: U.S. Census Bureau, American Community Survey 2025 estimates.

Explore more Indiana ZIP codes
All Indiana ZIP codes Cedar Lake ZIP codes Crown Point ZIP codes Dyer ZIP codes East Chicago ZIP codes Gary ZIP codes Griffith ZIP codes Hammond ZIP codes Highland ZIP codes Hobart ZIP codes Lake Station ZIP codes
Need the complete Indiana ZIP code database? Download all IN ZIP codes — Excel, CSV, or Access. Includes lat/lng, county FIPS & timezone.
Download database →